[Solved] What is wrong with this Kotlin code and how can it be fixed?val numbers = listOf(5, 10, 15) val result = numbers[4] ?: 0 println(result) | Kotlin

Kotlin - Collections Fundamentals

What is wrong with this Kotlin code and how can it be fixed?

val numbers = listOf(5, 10, 15)
val result = numbers[4] ?: 0
println(result)

ANo error; code prints 0

BThe Elvis operator is misplaced; use ?: after println

CThe list is immutable; use a mutable list instead

DIndexOutOfBoundsException occurs; use getOrNull(4) ?: 0 instead

Step-by-Step Solution

Solution:

Step 1: Identify the error
Accessing numbers[4] throws IndexOutOfBoundsException because index 4 is out of range.
Step 2: Correct safe access
Use numbers.getOrNull(4) ?: 0 to safely get null if index is invalid, then default to 0.
Final Answer:
IndexOutOfBoundsException occurs; use getOrNull(4) ?: 0 instead -> Option D
Quick Check:
Index operator throws exception if out of bounds [OK]

Quick Trick: Use getOrNull() to avoid index exceptions [OK]

Common Mistakes:

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What is wrong with this Kotlin code and how can it be fixed?